Retrofitting Kit For Parking Guidance

Abstract

A method for ascertaining a relative position between a vehicle and an object located laterally to the vehicle, and a retrofitting kit having components to carry out this method. The object is initially detected in that the vehicle passes the object at least once. Subsequently, the vehicle movement is detected by a camera system which is situated in the vehicle and which generates video images at different recording points in time. Then, the detected vehicle movement is linked to the installation position of the camera system in the vehicle, the position of the at least one object detection sensor and a reference point. Next, the relative position change of the vehicle relative to the previously detected object is determined.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a method for ascertaining a relative position between a vehicle and an object as well as a device for carrying out the method.BACKGROUND INFORMATION[0002]German patent document DE 10 2006 / 010295 A1 relates to a stereo camera system for object detection in traffic. A camera system is used for speed detection. This camera system includes at least two different image recorders. The recording ranges of the individual image recorders overlap at least partially and the data of the image recorders are combined into a 3-D image. In one particular embodiment, image recorders are provided which are sensitive in different spectral ranges.[0003]German patent document DE 10 2005 / 003 354 A1 is directed to a camera for detecting a speed, in particular a relative speed between a collision object and a vehicle. A relative speed and a distance between the one collision object and the vehicle are detected at different measurement times while...

AI Technical Summary

Benefits of technology

[0015]The detected movement of the vehicle may be set arithmetically in relation to the fixed installation position of the video camera and the object detection sensors, as well as the vehicle point of rotation. The detection of the movement of a vehicle proposed according to the present invention may also be utilized for passive parking guidance. This is to be understood as an assistance system for the driver of a vehicle which guides the driver with the aid of steering and driving instructions along a previously computed trajectory and assists with a parking maneuver which may take place in the reverse direction.

[0016]The approach proposed according to the present invention does not require access to an on board data bus, e.g., the on board CAN data bus. This provides the option of manufacturing a stand-alone system without linkage to other systems installed in the vehicle, such as the ABS system or the ESP system, so that the implementation of a retrofitting kit is possible while refraining from meeting the above-mentioned access requirements. The retrofitting kit according to the system proposed according to the present invention for determining the vehicle movement and ascertaining a collision may therefore be configured very cost-effectively, since it includes only a few components.

Problems solved by technology

One difficulty which has emerged during the use of side distance warning systems is the fact that for determining the object position for the time in which the objects are no longer detected the vehicle movement relative to this object is to be determined very precisely.

The reason for this is that carried out estimations of deviations from the actual position, e.g., in the order of magnitude of approximately 10 cm, may in fact result in a collision of such an object, e.g., an exterior mirror of the vehicle.

In particular in retrofittable systems, the access to an on board CAN bus is very difficult or not possible at all.

In this way, it is only possible with great effort to provide a side distance warning system (SDW) in the form of a retrofitting kit.

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